Dzbj_ESP32-S3/main/ui/screens/ui_ScreenImg.c

// This file was generated by SquareLine Studio
// SquareLine Studio version: SquareLine Studio 1.6.0
// LVGL version: 8.3.11
// Project name: Lcd_Pro

#include "../ui.h"
#include "ui_ScreenSet.h"  // 引入ScreenSet的函数声明
#include "../../pages/include/pages.h"  // 引入图片管理函数
#include "esp_log.h"  // 用于日志输出

extern void init_spiffs_image_list(void);
extern void update_ui_ImgBle(const char *img_name);
extern void free_spiffs_image_list(void);
extern const char* get_next_image(void);
extern const char* get_prev_image(void);

lv_obj_t *ui_ScreenImg = NULL;
lv_obj_t *ui_ImgBle = NULL;
lv_obj_t *ui_ContainerDle = NULL;
lv_obj_t *ui_ImageDel = NULL;
lv_obj_t *ui_ImageReturn = NULL;

// 标志：是否首次加载
static bool first_load = true;
// 标志：是否需要显示 ContainerDle（只有从 ScreenSet 点击 ImgDelete 时才为 true）
static bool should_show_container = false;

// 显示 ContainerDle
void ui_ScreenImg_show_delete_container(void) {
    should_show_container = true;  // 设置标志，表示需要显示
    if (ui_ContainerDle) {
        lv_obj_clear_flag(ui_ContainerDle, LV_OBJ_FLAG_HIDDEN);
    }
}

// 隐藏 ContainerDle
void ui_ScreenImg_hide_delete_container(void) {
    should_show_container = false;  // 清除标志
    if (ui_ContainerDle) {
        lv_obj_add_flag(ui_ContainerDle, LV_OBJ_FLAG_HIDDEN);
    }
}

// ImageReturn 点击事件：隐藏容器
void ui_event_ImageReturn(lv_event_t * e) {
    lv_event_code_t event_code = lv_event_get_code(e);
    if (event_code == LV_EVENT_CLICKED) {
        ui_ScreenImg_hide_delete_container();
    }
}

// ImageDel 点击事件：删除当前图片
void ui_event_ImageDel(lv_event_t * e) {
    lv_event_code_t event_code = lv_event_get_code(e);
    if (event_code == LV_EVENT_CLICKED) {
        // 删除当前图片
        if (delete_current_image()) {
            // 删除成功，隐藏容器
            ui_ScreenImg_hide_delete_container();

            // 获取下一张图片（内部已更新索引）
            const char *next_img = get_current_image();
            if (next_img) {
                // 显示下一张图片
                update_ui_ImgBle(next_img);
            } else {
                // 没有图片了，可以显示提示信息
                // 这里暂不处理，保持当前界面
            }
        } else {
            // 删除失败，仍然隐藏容器
            ui_ScreenImg_hide_delete_container();
        }
    }
}

// event funtions
void ui_event_ScreenImg( lv_event_t * e) {
    lv_event_code_t event_code = lv_event_get_code(e);

// 界面加载完成事件：首次进入时才初始化图片
if ( event_code == LV_EVENT_SCREEN_LOADED ) {
    if (first_load) {
        first_load = false;

        // 初始化图片列表
        init_spiffs_image_list();

        // 获取第一张可用图片
        const char *first_img = get_current_image();
        if (first_img) {
            // 显示第一张SPIFFS图片
            update_ui_ImgBle(first_img);
        } else {
            // 没有图片，保持显示UI资源图片 ui_img_s1_png
            ESP_LOGI("ScreenImg", "SPIFFS无可用图片，显示默认UI图片");
        }
    }

    // 每次加载界面时检查是否需要显示 ContainerDle
    // 只有从 ScreenSet 点击 ImgDelete 时 should_show_container 才为 true
    if (should_show_container) {
        // 需要显示，保持显示状态（已在 ui_ScreenImg_show_delete_container 中显示）
        should_show_container = false;  // 清除标志（下次进入默认不显示）
    } else {
        // 不需要显示，确保隐藏
        ui_ScreenImg_hide_delete_container();
    }
}

if ( event_code == LV_EVENT_GESTURE &&  lv_indev_get_gesture_dir(lv_indev_get_act()) == LV_DIR_TOP  ) {
lv_indev_wait_release(lv_indev_get_act());
      // 离开界面前隐藏容器
      ui_ScreenImg_hide_delete_container();
      _ui_screen_change( &ui_ScreenHome, LV_SCR_LOAD_ANIM_NONE, 0, 0, &ui_ScreenHome_screen_init);
}
if ( event_code == LV_EVENT_GESTURE &&  lv_indev_get_gesture_dir(lv_indev_get_act()) == LV_DIR_BOTTOM  ) {
lv_indev_wait_release(lv_indev_get_act());
      // 离开界面前隐藏容器
      ui_ScreenImg_hide_delete_container();
      // 设置返回到Img界面
      ui_ScreenSet_set_previous(&ui_ScreenImg, &ui_ScreenImg_screen_init);
      _ui_screen_change( &ui_ScreenSet, LV_SCR_LOAD_ANIM_NONE, 0, 0, &ui_ScreenSet_screen_init);
}
if ( event_code == LV_EVENT_GESTURE &&  lv_indev_get_gesture_dir(lv_indev_get_act()) == LV_DIR_LEFT  ) {
lv_indev_wait_release(lv_indev_get_act());
      const char *next_img = get_next_image();
      if(next_img) {
          update_ui_ImgBle(next_img);
      }
}
if ( event_code == LV_EVENT_GESTURE &&  lv_indev_get_gesture_dir(lv_indev_get_act()) == LV_DIR_RIGHT  ) {
lv_indev_wait_release(lv_indev_get_act());
      const char *prev_img = get_prev_image();
      if(prev_img) {
          update_ui_ImgBle(prev_img);
      }
}
}

// build funtions

void ui_ScreenImg_screen_init(void)
{
ui_ScreenImg = lv_obj_create(NULL);
lv_obj_clear_flag( ui_ScreenImg, LV_OBJ_FLAG_SCROLLABLE );    /// Flags

ui_ImgBle = lv_img_create(ui_ScreenImg);
lv_img_set_src(ui_ImgBle, &ui_img_s1_png);
lv_obj_set_width( ui_ImgBle, 360);
lv_obj_set_height( ui_ImgBle, 360);
lv_obj_set_align( ui_ImgBle, LV_ALIGN_CENTER );
lv_obj_set_flex_flow(ui_ImgBle,LV_FLEX_FLOW_ROW);
lv_obj_set_flex_align(ui_ImgBle, LV_FLEX_ALIGN_START, LV_FLEX_ALIGN_START, LV_FLEX_ALIGN_START);
lv_obj_add_flag( ui_ImgBle, LV_OBJ_FLAG_ADV_HITTEST );   /// Flags
lv_obj_clear_flag( ui_ImgBle, LV_OBJ_FLAG_SCROLLABLE );    /// Flags

ui_ContainerDle = lv_obj_create(ui_ScreenImg);
lv_obj_remove_style_all(ui_ContainerDle);
lv_obj_set_width( ui_ContainerDle, 360);
lv_obj_set_height( ui_ContainerDle, 360);  // 圆形容器
lv_obj_set_x( ui_ContainerDle, 0 );
lv_obj_set_y( ui_ContainerDle, 240 );  // 向下偏移 240px（显示顶部 1/3）
lv_obj_set_align( ui_ContainerDle, LV_ALIGN_CENTER );
lv_obj_clear_flag( ui_ContainerDle, LV_OBJ_FLAG_CLICKABLE | LV_OBJ_FLAG_SCROLLABLE );
// 设置圆形和裁剪
lv_obj_set_style_radius(ui_ContainerDle, 180, LV_PART_MAIN);  // 圆角半径 180
lv_obj_set_style_clip_corner(ui_ContainerDle, true, LV_PART_MAIN);  // 裁剪圆角外内容
lv_obj_set_style_bg_color(ui_ContainerDle, lv_color_hex(0x000000), LV_PART_MAIN);
lv_obj_set_style_bg_opa(ui_ContainerDle, 180, LV_PART_MAIN);  // 半透明（180/255 约 70%）
lv_obj_add_flag( ui_ContainerDle, LV_OBJ_FLAG_HIDDEN );  // 默认隐藏

ui_ImageDel = lv_img_create(ui_ContainerDle);
lv_img_set_src(ui_ImageDel, &ui_img_s13_png);
lv_obj_set_width( ui_ImageDel, LV_SIZE_CONTENT);
lv_obj_set_height( ui_ImageDel, LV_SIZE_CONTENT);
lv_obj_set_x( ui_ImageDel, -60 );  // 左侧位置
lv_obj_set_y( ui_ImageDel, -120 );  // 容器顶部区域（屏幕底部可见区域）
lv_obj_set_align( ui_ImageDel, LV_ALIGN_CENTER );
lv_obj_add_flag( ui_ImageDel, LV_OBJ_FLAG_CLICKABLE );  // 可点击
lv_obj_clear_flag( ui_ImageDel, LV_OBJ_FLAG_SCROLLABLE );

ui_ImageReturn = lv_img_create(ui_ContainerDle);
lv_img_set_src(ui_ImageReturn, &ui_img_s14_png);
lv_obj_set_width( ui_ImageReturn, LV_SIZE_CONTENT);
lv_obj_set_height( ui_ImageReturn, LV_SIZE_CONTENT);
lv_obj_set_x( ui_ImageReturn, 60 );  // 右侧位置
lv_obj_set_y( ui_ImageReturn, -120 );  // 容器顶部区域（屏幕底部可见区域）
lv_obj_set_align( ui_ImageReturn, LV_ALIGN_CENTER );
lv_obj_add_flag( ui_ImageReturn, LV_OBJ_FLAG_CLICKABLE );  // 可点击
lv_obj_clear_flag( ui_ImageReturn, LV_OBJ_FLAG_SCROLLABLE );

// 添加点击事件回调
lv_obj_add_event_cb(ui_ImageDel, ui_event_ImageDel, LV_EVENT_ALL, NULL);
lv_obj_add_event_cb(ui_ImageReturn, ui_event_ImageReturn, LV_EVENT_ALL, NULL);

lv_obj_add_event_cb(ui_ScreenImg, ui_event_ScreenImg, LV_EVENT_ALL, NULL);

// 注意：不在此处加载图片，延迟到 LV_EVENT_SCREEN_LOADED 事件中加载
// 这样避免ui_init()时触发渲染导致开机闪烁
}

void ui_ScreenImg_screen_destroy(void)
{
   if (ui_ScreenImg) lv_obj_del(ui_ScreenImg);

// NULL screen variables
ui_ScreenImg= NULL;
ui_ImgBle= NULL;
ui_ContainerDle= NULL;
ui_ImageDel= NULL;
ui_ImageReturn= NULL;

// 重置首次加载标志，下次进入时重新初始化
first_load = true;

free_spiffs_image_list();
}